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nounany of several trees of the genus Populus having leaves on flattened stalks so that they flutter in the lightest windtype of:
Definition that contains aspen
- bigtoothed aspen aspen with a narrow crown; eastern North America
- populus grandidentata aspen with a narrow crown; eastern North America
- canadian aspen aspen with a narrow crown; eastern North America
- big-toothed aspen aspen with a narrow crown; eastern North America
- large tooth aspen aspen with a narrow crown; eastern North America
- bigtooth aspen aspen with a narrow crown; eastern North America
- large-toothed aspen aspen with a narrow crown; eastern North America